Throttle Switch
Remove cover from switch on 510 and 610 models. When accelerator pedal is depressed a clicking sound can be heard. Check insulation between terminals of switch and base plate. On 510 and 610 models check that idle mark of cam and stopper plate are properly aligned. If not, loosen adjusting screws and rotate switch until correct alignment is achieved, then retighten adjusting screw. On Pickup models, check that clearance between throttle switch and lever is.012" (.3 mm) with accelerator pedal and micro switch fully depressed. If clearance is not correct, loosen adjusting screws, rotate switch until clearance is correct and retighten adjusting screws. Connect ohmmeter to switch terminals. Meter should read infinity when accelerator pedal is fully depressed and zero when pedal is released or partially depressed. If switch does not function correctly, replace. On 510 and 610 models, replace switch cover.